110 PRINCIPLES OF FEEDING FARM ANIMALS 



work, feed IJ pounds of concentrates and 1 to IJ pounds of 

 hay per day per 100 pounds live weight ; or feed 30 ears of 

 corn (21 pounds), or 20 ears of corn (14 pounds) and \\ 

 gallons of oats (6 pounds) per day with hay ad libitum. 



DAIRY CATTLE 



1. For young calves (weighing about 100 pounds), feed 

 6 quarts of whole milk per day with clover or alfalfa hay 

 ad libitum. 



2. For calves (weighing about 300 pounds), feed 8 quarts 

 of skim milk and 3 pounds of concentrates per day and clover 

 or alfalfa hay ad libitum. 



3. For the maintenance of dry cows, feed 20 pounds of 

 corn silage and other roughage ad libitum, or 4 pounds of 

 grain and roughage ad libitum, or run on pasture. 



4. The average cow requires about 24 pounds of digestible 

 dry substance daily. .About two-thirds or 16 pounds of the 

 digestible dry substance of the ration should be in the form 

 of roughage and one-third or 8 pounds in the form of concen- 

 trates. 



5. Feed about 2 pounds of dry roughage,^ or 1 pound of 

 dry roughage and 3 pounds of silage per 100 pounds of live 

 weight together with concentrates as prescribed in Rules 

 6 and 7. 



6. Feed one pound of concentrates ^ daily per every three 

 pounds of milk produced daily and roughage ad libitum. 



1 When feeding silage due allowance should be made for the fact that it 

 contains only about 25 per cent of dry substance. Thus 40 pounds of 

 silage actually contain only about 10 pounds of dry substance. 



2 In feeding corn silage allowance should be made for the fact that it 

 contains about 14 per cent of corn. For example, 40 pounds of silage would 

 contain 5.6 pounds of corn. 



